KF7CX designs a new high performance hardware circuit to regenerate QRQ CW from a live audio source or recording.

It will take a very harsh, raspy, noisy cw tone and recreate it into a near perfect sine wave shaped cw audio tone. Listen to this demo as he regenerates a very noisy, raspy, sidetone with background noise, hum and harmonics in it, into a near perfect sine wave shaped cw sidetone audio output.